JPH01180434A - Inspecting method for property of dredged slurry - Google Patents
Inspecting method for property of dredged slurryInfo
- Publication number
- JPH01180434A JPH01180434A JP458488A JP458488A JPH01180434A JP H01180434 A JPH01180434 A JP H01180434A JP 458488 A JP458488 A JP 458488A JP 458488 A JP458488 A JP 458488A JP H01180434 A JPH01180434 A JP H01180434A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- pipe
- main pipe
- bypass pipe
- dredger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims description 13
- 238000007689 inspection Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、浚渫作業において排送中のスラリーの性状を
検査するための方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for inspecting the properties of slurry being discharged in dredging operations.
（従来の技術）
浚渫作業において、排送中のスラリーの性状を正確に把
握することは、浚渫船の運転管理を行う上できわめて重
要となる。(Prior Art) Accurately understanding the properties of slurry being discharged during dredging work is extremely important in managing the operation of a dredger.
従来、この浚渫スラリーの性状を検査するには、一般に
排送管の排出口でスラリーを採取し、これを浚渫船に持
ち帰って種々の性状検査に供する方法を採っていた。し
かしながら、この方法によれば、排送管は大口径（通常
５００〜１０００ｓ＋ｍ径）で、しかもこの中を大量の
スラリーが流れるため、その排出口から必要量のスラリ
ーを採取するのがきわめて困難であり、これに加えて前
記採取したスラリーを浚渫船まで持ち帰る時間的ロスが
大きいため、運転管理のタイミングを失する危険性があ
った。Conventionally, in order to inspect the properties of this dredged slurry, the method was generally to collect the slurry at the discharge port of the discharge pipe, take it back to the dredger, and subject it to various property tests. However, according to this method, the discharge pipe has a large diameter (usually 500 to 1000 s+m diameter) and a large amount of slurry flows through it, so it is extremely difficult to collect the necessary amount of slurry from the discharge port. In addition to this, there was a large time loss in bringing the collected slurry back to the dredger, so there was a risk of losing the timing for operational management.
そこで従来、排送管に、例えば差圧式密度計、−γ線式
密度計等の測定計器を設置し、浚渫船上で直接スラリー
の性状を検査する試みが一部なされていた。Therefore, some attempts have been made to install measurement instruments such as a differential pressure density meter or a -gamma ray density meter in the discharge pipe to directly inspect the properties of the slurry on a dredging vessel.
（発明が解決しようとする課題）
しかしながら、上記排送管に計器類を設置する方法によ
れば、大口径の排送管を対象とする関係上、検査装置が
大量りとなって設置費用が嵩むばかりか、保全性が悪い
という問題があった。(Problem to be Solved by the Invention) However, according to the method of installing instruments on the discharge pipe, since the target is a large-diameter discharge pipe, a large amount of inspection equipment is required, and the installation cost is high. Not only was it bulky, but it also had problems with poor maintainability.
本発明は、上記従来の問題に鑑みてなされたもので、浚
渫船上で簡便にスラリーの性状を検査し得る検査方法を
提供することを目的とする。The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an inspection method that can easily inspect the properties of slurry on a dredger.
（課題を解決するための手段）
本発明は、上記課題を解決するため、浚渫船上に位置す
る浚渫用本管に該本管より小口径のバイパス管を設け、
このバイパス管に本管内のスラリーをポンプユニットに
より強制的に循環させ、該バイパス管内でスラリーの性
状を検査するように構成したことを特徴とする。(Means for Solving the Problems) In order to solve the above problems, the present invention provides a dredging main pipe located on a dredging vessel with a bypass pipe having a smaller diameter than the main pipe,
The present invention is characterized in that the slurry in the main pipe is forcibly circulated through the bypass pipe by a pump unit, and the properties of the slurry are inspected within the bypass pipe.
本発明において、上記バイパス管は、その−部を脱着可
能としあるいは測定計器にて置換することができる。In the present invention, the bypass pipe can be made detachable or replaced by a measuring instrument.
また本発明において、上記バイパス管は、浚渫用本管の
腹部の垂直方向中央付近から該本管の軸線に対してはＮ
３０’の角度をなすように分岐させるのが望ましい。Further, in the present invention, the bypass pipe extends from near the vertical center of the abdomen of the main dredging pipe to the axis of the main pipe.
Preferably, the branches form an angle of 30'.
（作用）
上記構成の浚渫スラリーの性状検査方法において、ポン
プユニー／ ）の排出容量を適宜制御してスラリーをバ
イパス管に強制的に循環させることにより、小口径のバ
イパス管内に本管と同じスラリーの流れ状況を再現でき
、このバイパス管を用いてスラリーの性状検査を簡便に
実行し得るようになる。(Function) In the method for inspecting properties of dredging slurry having the above configuration, by appropriately controlling the discharge capacity of the pump unit/ The flow condition of the slurry can be reproduced, and the properties of the slurry can be easily inspected using this bypass pipe.
（実施例）
以下、本発明の実施例を添付図面にもとづいて説明する
。(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.
第１図および第２図は、本発明にか−る浚渫スラリーの
性状検査方法の第１実施例を実行する装置構成を示した
ものである。これらの図において、１は浚渫船、２は浚
渫用本管（５００ｍｍ〜１０００ｍｍ径）で、浚渫船ｌ
上に位置する本管２には小口径（１００〜２００ｍ層径
）のバイパス管３が設けられている。バイパス管３には
、ポンプ４ａとモータ４ｂとから成るポンプユニット４
が介装されており、該ポンプユニット４の作動により、
バイパス管３には本管２内のスラリーが強制的に循環せ
られるようになる。1 and 2 show the configuration of an apparatus for carrying out a first embodiment of the dredging slurry property inspection method according to the present invention. In these figures, 1 is the dredger, 2 is the dredging main pipe (500 mm to 1000 mm diameter), and the dredger l
The main pipe 2 located above is provided with a bypass pipe 3 having a small diameter (layer diameter of 100 to 200 m). The bypass pipe 3 includes a pump unit 4 consisting of a pump 4a and a motor 4b.
is interposed, and by the operation of the pump unit 4,
The slurry in the main pipe 2 is forced to circulate through the bypass pipe 3.
しかして上記バイパス管３は、その途中の一部が後述す
る重量式密度計５にて置換されている。この重量式密度
計５の両端には開閉バルブ８．７が装着されており、該
重量式密度計５は前記開閉バルブ８．７を介してバイパ
ス管３に脱着可能に取付けられている。なおバイパス管
３の分岐側にも開閉バルブ８が介装され、本管２に対し
てバイパス管３を任意開閉できるようになっている。A portion of the bypass pipe 3 is replaced by a gravimetric density meter 5, which will be described later. On-off valves 8.7 are attached to both ends of the gravimetric density meter 5, and the gravimetric density meter 5 is detachably attached to the bypass pipe 3 via the on-off valves 8.7. An on-off valve 8 is also interposed on the branch side of the bypass pipe 3, so that the bypass pipe 3 can be opened and closed with respect to the main pipe 2 at will.
こ−で、上記重量式密度計５は、ロードセルを内蔵する
揺動体搭載形（三菱重工社製）のもので、この中を流れ
るスラリーの重量からその密度を連続的に検出できる機
能を有している。The gravimetric density meter 5 is of the rocking body type (manufactured by Mitsubishi Heavy Industries, Ltd.) with a built-in load cell, and has the function of continuously detecting the density of the slurry flowing therein from its weight. ing.
この重量式密度計５には図示を略すペンレコーダが接続
されており、検出結果が連続記録されるようになってい
る。一方バイパス管３は、その上流側が本管２の腹部の
垂直方向中央付近から該本管２の軸線に対して所定の角
度α（こ−では約３０°）をなすように分岐されている
。A pen recorder (not shown) is connected to this gravimetric density meter 5, so that detection results are continuously recorded. On the other hand, the bypass pipe 3 is branched so that its upstream side forms a predetermined angle α (approximately 30° in this case) from near the vertical center of the abdomen of the main pipe 2 with respect to the axis of the main pipe 2.
上記検査装置により、いま各開閉バルブＢ、７゜８を開
弁し、ポンプユニット４を作動すると。Using the above inspection device, each opening/closing valve B, 7° 8 is now opened and the pump unit 4 is operated.
本管２内を流れるスラリーの一部がバイパス管３内に導
かれ、重量式密度計５を通過して再び本管２に還えり、
この間重量式密度計５によってスラリーの密度が連続検
出される。しかして、前記ポンプユニット４の排出容量
を適宜制御することにより、バイパス管３内には本管２
と同じスラリーの流れ状況が再現され、前記重量式密度
計５によってスラリーの性状を正確に把握することがで
きるようになる。また、必要に応じて各開閉バルブ８．
？、８を閉弁して、重量式密度計５をバイパス管３から
取外すことにより、該密度計５内からスラリー中に含ま
れる土砂を採取することができ、砂の粒径あるいは土質
の分析が可能になる。A part of the slurry flowing in the main pipe 2 is guided into the bypass pipe 3, passes through the gravimetric density meter 5, and returns to the main pipe 2,
During this time, the density of the slurry is continuously detected by the gravimetric density meter 5. By appropriately controlling the discharge capacity of the pump unit 4, the main pipe 2 is placed inside the bypass pipe 3.
The same flow situation of the slurry is reproduced, and the properties of the slurry can be accurately grasped using the gravimetric density meter 5. In addition, each opening/closing valve 8.
? , 8 are closed and the gravimetric density meter 5 is removed from the bypass pipe 3, the soil contained in the slurry can be collected from inside the density meter 5, and the sand particle size or soil quality can be analyzed. It becomes possible.
上記第１実施例において１重量式密度計５を用いたので
、スラリーの密度を連続的に検査することができ、この
結果をフィードバックすることによってリアルタイムに
浚渫船の運転を管理し得るようになる。しかも小口径の
バイパス管３の一部を置換する態様で該重量式密度計５
を設置したので、小型の重量式密度計５の使用で足り、
設備コストの低減を達成できる。Since the single gravimetric density meter 5 was used in the first embodiment, it is possible to continuously test the density of the slurry, and by feeding back the results, it is possible to manage the operation of the dredger in real time. Moreover, the gravimetric density meter 5 is designed in such a manner that a part of the small-diameter bypass pipe 3 is replaced.
was installed, it is sufficient to use a small gravimetric density meter 5.
A reduction in equipment costs can be achieved.
また上記第１実施例において、バイパス管３を本管２の
腹部の垂直方向中央付近から該本管２の軸線に対して所
定の角度α（こへでは、約３０°）をなすように分岐さ
せたので、本管２からバイパス管３へのスラリーの流入
が円滑となって、より再現性が向上するようになる。Further, in the first embodiment, the bypass pipe 3 is branched from near the vertical center of the abdomen of the main pipe 2 so as to form a predetermined angle α (approximately 30° here) with respect to the axis of the main pipe 2. As a result, the slurry flows smoothly from the main pipe 2 to the bypass pipe 3, and reproducibility is further improved.
第３図は、本発明にか−る浚渫スラリーの性状検査方法
の第２実施例を実行する装置構成を示したものである。FIG. 3 shows the configuration of an apparatus for carrying out a second embodiment of the method for inspecting the properties of dredged slurry according to the present invention.
なお同図において第１実施例と同一部分には同一符号を
付し、その説明は省略する０本第２実施例の特徴とする
ところは、前記重量式密度計５に代えて透明な計量管１
１を設置し、一方バイパス管３にサブバイパス管１２を
設けて、両者の接続部に三方弁１３．１４を介装した点
にある。In the figure, the same parts as in the first embodiment are given the same reference numerals, and their explanations are omitted.The second embodiment is characterized by a transparent measuring tube in place of the gravimetric density meter 5. 1
1, a sub-bypass pipe 12 is provided on the bypass pipe 3, and three-way valves 13 and 14 are interposed at the connection between the two.
か−る構成により、常時は三方弁１３．１４の切換えに
よりバイパス管３内へスラリーを循環させておく、そし
て必要に応じて三方弁１３．１４をサブバイパス管１２
側へ切換えると共に開閉弁６゜７を閉弁し、計量管１１
をバイパス管３から取外してこれを重量測定に供する。With this configuration, the slurry is normally circulated into the bypass pipe 3 by switching the three-way valve 13, 14, and the three-way valve 13, 14 is switched into the sub-bypass pipe 12 as necessary.
side, close the on-off valve 6゜7, and open the metering tube 11.
is removed from the bypass pipe 3 and subjected to weight measurement.
計量管１１の重量測定により、この中のスラリーの密度
が分かり、また計量管１１から土砂を採取することによ
り砂の粒径あるいは土質が分かる。By measuring the weight of the measuring tube 11, the density of the slurry therein can be determined, and by collecting soil from the measuring tube 11, the grain size of the sand or the soil quality can be determined.
本第２実施例において、透明な計量管１１を用いたこと
により浚渫スラリーの性状を定性的にも把握することが
でき、浚渫船の運転管理に役立つ。In the second embodiment, by using the transparent measuring pipe 11, the properties of the dredged slurry can be qualitatively grasped, which is useful for operational management of the dredger.
なおバイパス管３に取付ける測定計器は、上重力式密度
計５あるいは計量管１１に限定されず、例えばγ線式密
度計を用いることができる・この場合、小口径のバイパ
ス管３への設置により、γ線の照射エネルギーは小さく
て済み、特別の免許なしに取扱可能となって、その有用
性が高まる。Note that the measuring instrument installed in the bypass pipe 3 is not limited to the upper gravity type density meter 5 or the measuring tube 11, and for example, a gamma ray type density meter can be used. In this case, by installing it in the bypass pipe 3 of small diameter, , the irradiation energy of gamma rays is small, and it can be handled without a special license, increasing its usefulness.
（発明の効果）
以上、詳細に説明したように、本発明にか翫る浚渫スラ
リーの性状検査方法によれば、小口径のバイパス管内に
本管と同じスラリーの流れ状況を再現でき、浚渫船上に
おいてスラリーの性状を簡便に検査し得る効果を奏する
。(Effects of the Invention) As described above in detail, according to the method for inspecting the properties of dredged slurry according to the present invention, it is possible to reproduce the same slurry flow situation in the small-diameter bypass pipe as in the main pipe, and it is possible to This has the effect that the properties of the slurry can be easily inspected.
第１図は、本発明にか覧る浚渫スラリーの性状検査方法
の第１実施例を実行する装置の平面図、第２図はその側
面図、第３図は１本方法の第２実施例を実行する装置の
平面図である。
ｌ・・・ 浚渫船、 ２・・・ 本管３・・・ バ
イパス管、 ４・・・ ポンプユニット５・・・ 重力
式密度計、８，７．８・・・ 開閉バルブ１１・・・
計量管、 １２・・・ サブバイパス管１３．１
４・・・三方弁
特許出願人 運輸省港湾技術研究所長
合田良実
同 東洋建設株式会社FIG. 1 is a plan view of an apparatus for carrying out the first embodiment of the dredged slurry property inspection method according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a second embodiment of the one-piece method. FIG. l... Dredger, 2... Main pipe 3... Bypass pipe, 4... Pump unit 5... Gravity type density meter, 8, 7.8... Opening/closing valve 11...
Metering pipe, 12... Sub-bypass pipe 13.1
4...Three-way valve patent applicant Yoshimi Goda, Director of Port Technology Research Institute, Ministry of Transport Toyo Construction Co., Ltd.
Claims (1)
径のバイパス管を設け、このバイパス管に本管内のスラ
リーをポンプユニットにより強制的に循環させ、該バイ
パス管内でスラリーの性状を検査するようにしたことを
特徴とする浚渫スラリーの性状検査方法。(1) A bypass pipe with a smaller diameter than the main pipe is installed in the main dredging pipe located on the dredging vessel, and the slurry in the main pipe is forcibly circulated through this bypass pipe by a pump unit, and the properties of the slurry are determined in the bypass pipe. A method for inspecting the properties of dredged slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004584A JPH0789096B2 (en) | 1988-01-12 | 1988-01-12 | Property inspection method for dredging slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004584A JPH0789096B2 (en) | 1988-01-12 | 1988-01-12 | Property inspection method for dredging slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180434A true JPH01180434A (en) | 1989-07-18 |
| JPH0789096B2 JPH0789096B2 (en) | 1995-09-27 |
Family
ID=11588089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63004584A Expired - Fee Related JPH0789096B2 (en) | 1988-01-12 | 1988-01-12 | Property inspection method for dredging slurry |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0789096B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7601253B2 (en) | 2001-10-02 | 2009-10-13 | Japan Energy Corporation | Process oil and process for producing the same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52162409U (en) * | 1976-06-02 | 1977-12-09 | ||
| JPS53121690A (en) * | 1977-03-31 | 1978-10-24 | Mitsubishi Chem Ind | Sampler for high viscosity fluids |
| JPS59157528A (en) * | 1983-02-26 | 1984-09-06 | Oval Eng Co Ltd | Liquid sampling device |
| JPS6013345A (en) * | 1983-07-04 | 1985-01-23 | Sony Corp | Recording and reproducing method of digital signal |
| JPS61147953U (en) * | 1985-03-06 | 1986-09-12 |
-
1988
- 1988-01-12 JP JP63004584A patent/JPH0789096B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52162409U (en) * | 1976-06-02 | 1977-12-09 | ||
| JPS53121690A (en) * | 1977-03-31 | 1978-10-24 | Mitsubishi Chem Ind | Sampler for high viscosity fluids |
| JPS59157528A (en) * | 1983-02-26 | 1984-09-06 | Oval Eng Co Ltd | Liquid sampling device |
| JPS6013345A (en) * | 1983-07-04 | 1985-01-23 | Sony Corp | Recording and reproducing method of digital signal |
| JPS61147953U (en) * | 1985-03-06 | 1986-09-12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7601253B2 (en) | 2001-10-02 | 2009-10-13 | Japan Energy Corporation | Process oil and process for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0789096B2 (en) | 1995-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU5959090A (en) | Sand detector | |
| CN109738231A (en) | Heavy metal in water sampling detecting device and application method | |
| CN207439873U (en) | Particle concentration detection device and air processor | |
| CN208805446U (en) | A kind of adjustable light scattering formula particulate matter detector | |
| CN101368917B (en) | Automatic ore slurry grade control instrument | |
| JPH01180434A (en) | Inspecting method for property of dredged slurry | |
| Selbig et al. | Verification of a depth-integrated sample arm as a means to reduce solids stratification bias in urban stormwater sampling | |
| CN106371470A (en) | Corrosion evaluation test dissolved oxygen content control device and method | |
| CN104251900B (en) | A kind of slurries quality measurement supervising device and measuring and monitoring method | |
| CN109855693A (en) | Ultrasonic water meter apparatus with leak protection and prefilter | |
| JP2601735B2 (en) | Method and apparatus for measuring the amount of admixture in uncured concrete | |
| CN208060204U (en) | A kind of Multi-channel sample device of Water Test Kits | |
| Lorberau et al. | Evaluation of direct-on-filter methods for the determination of respirable α-quartz | |
| JP3837350B2 (en) | Sampling device | |
| JPS5748634A (en) | Isokinetic sampling device | |
| US20040112122A1 (en) | BS&W metering apparatus & method | |
| JPH0915136A (en) | Laser diffraction/scattering type particle size distribution measuring apparatus | |
| JP3170649B2 (en) | Method for managing magnetic powder liquid in magnetic particle flaw detection and artificial defect sensor device used in the method | |
| CN208383841U (en) | Hydrogen quality analyzer and hydrogen gas cooling system | |
| JPH0418266B2 (en) | ||
| JPH0634518A (en) | Method for analyzing floating particle in air such as pollen, tick, and house dust | |
| Martynov | Experience accumulated in using foreign equipment | |
| JPH01233364A (en) | Non-destructive inspection equipment for spheric graphite cast iron product | |
| MASSON et al. | A new nondestructive testing technique- Acoustic emission detection | |
| CN116705356A (en) | Experimental device and experimental method for preparing nuclear accident aerosol simulated deposition wall surface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |